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Simplifying 2x + -7x + 5x = 18 Combine like terms: 2x + -7x = -5x -5x + 5x = 18 Combine like terms: -5x + 5x = 0 0 = 18 Solving 0 = 18 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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